Slump test is the most commonly used method of measuring consistency of concrete which can be employed either in laboratory or at site of work. Slump test for concrete free download as powerpoint presentation. Pdf reproducible minislump test procedure for measuring the. Slump plate 500 mm x 500 mm procedure of slump test for concrete. Standard test method for slump of hydrauliccement concrete. It requires less apparatus when compared with the other tests. Collect a sample of concrete to perform the slum test. Under laboratory conditions, with strict control of all concrete materials, the slump is generally found to increase proportionally with the water content of a given concrete mixture, and thus to be inversely related to concrete strength. American society for testing and materials astm standards are astm c 143 or astm.
To determine the workability or consistency of a concrete mix of given proportion by slump test. Jun 28, 2018 overview of astm c143 standard test method for slump of hydrauliccement concrete. The slump is done following the methods described in astm c143 in the united states, is. American society for testing and materials astm standards are astm c 143 or astm c143m. A small variation in slump caused by improper procedure or equipment,may cause the rejection of an entire load of concrete. The test is popular due to the simplicity of apparatus used and simple procedure. A list of the national concrete standards relevant to cube testing are. Estimating concrete workability based on slump test with.
Concrete slump is generally known to affect the consistency, flowability, pumpability, compactibility, and harshness of a concrete mix. Consistency refers to the ease and homogeneity with which t. Cement and concrete ced 2 designator of legally binding document. We use your linkedin profile and activity data to personalize ads and to show you more relevant ads. Here are the steps to do the slump test of concrete. The concrete slump test is an empirical test that measures the workability of fresh concrete. Typically, in a slump test, a mould of a given conical shape fig. Slumptest bs en 123502 specifies a method for determining the consistence of fresh concrete by the slump test. If a shear or collapse slump is achieved, a fresh sample should be taken and the test is. In a true slump the concrete simply subsides, keeping more or less to shape.
Feb 01, 2009 we use your linkedin profile and activity data to personalize ads and to show you more relevant ads. The internal surface of the mould is thoroughly cleaned and freed from superfluous moisture and adherence of any old set concrete before commencing test. Slump flow test on self compacting concrete for workability. Iron pan to mix concrete, weighing machine, trowel slump, cone, scale, and tamping rod. More specifically, it measures the consistency of the concrete in that specific batch the test is an emprical test that measures the workability of fresh concrete. Slump test procedure can be performed in laboratory as well as construction site.
This test method was originally developed to provide a technique to monitor the consistency of unhardened concrete. The slump test is a means of assessing the consistency of fresh concrete. Slump test is an empirical test that measures workability of fresh concrete, it is performed to check consistency of freshly made concrete. Fill onethird of the slump cone and tamp 25 times with a rod. A concrete mix m15 or other by weight with suitable water cement ratio is prepaid in the laboratory similar to that explained in 5. The slump is carried out as per procedures mentioned in astm c143 in the united states, is.
Chapter 17 tex415a, slump of portland cement concrete section 1 overview 400a, concrete test procedures 172 081998 112004 section 1 overview effective august 1998 november 2004. Concrete technology by dibyandu pal april 2, 2020 may 2, 2020 leave a comment. It can be carried out from batch to batch to check the workability of freshly made. Slump test provides immediate result about the consistency and workability of concrete, that is the reason it is used widely in all over the world since 1922. Legally binding document step out from the old to the newjawaharlal nehru invent a new india using knowledge. The slump cone is a hollow frustum made of thin steel sheet with internal dimensions, as the top diameter 10 cm. Empty the sample from the container onto the sampling try. Measure slump from the top of the mold to the displaced original center of the concrete. Slump test is the most commonly used test of measuring workability of concrete. Roll the drum for a certain time to completely mix the concrete.
Mar 24, 2020 slump test shouldnt be carried if the aggregate used in concrete is above 40mm. It is a measure of the concretes workability or the dampness of concrete. Tools standard slump cone 100 mm top diameter x 200 mm bottom diameter x 300 mm high small scoop bulletnosed rod 600 mm long x 16 mm diameter rule slump plate 500 mm x 500 mm. From a practical point of view, two geometrical quantities can be measured as the result of the test. Specification, performance, production and conformity hard concrete. Overview of astm c143 standard test method for slump of hydrauliccement concrete. Begin and complete slump test within 212 minutes, maximum. The consistency, or stiffness, indicates how much water has been used in the mix. Concrete slump test generally concrete slump value is used to find the workability, which indicates watercement ratio, but there are various factors. Slump test always do your slump test before making your cubes to ensure the concrete is usable. Mar, 2019 slump test can be done on site to check the concrete mix has expected fluid properties.
In a collapse slump the concrete collapses completely. Hence, an accurate prediction of this property is a practical need of construction engineers. It can be employed either in laboratory or at site of work. The concrete slump test is used for the measurement of a. Stand firmly on the footpieces and fill the volume of the cone with the sample. Concrete is placed into a cylindrical steel mold with an inner diameter of 36 mm. United kingdom and mainland europe edit in the united kingdom, the standards specify a slump cone height of 300 mm, a bottom diameter of 200 mm and a top diameter of 100 mm. The slump test indicates the behavior of a compacted concrete cone under. To measure the consistency of concrete by using slump cone apparatus required. Lab manual of concrete technology sanjay ghodawat group of. It is one of the physical parameters of concrete which affects the finesse, strength and durability. Beyond these extremes the measurement of slump can be unsuitable and other methods of determining the. The flow table test procedure does not conform with astm standard and is as follows. Standard test method for slump of hydraulic cement concrete.
Concrete slump testing is specified by astm american standards of testing and measurement. Slump test for concrete to determine its workability. This is a test required to pass the american concrete institute aci field technician certification program. Concrete slump test is a simple and lowcost test which is prepared in the laboratory or at the construction site for the determination of workability and consistency. The concrete slump test is an onthespot test to determine the consistency as well as workability of fresh concrete.
Concrete slump test procedure applications, types, uses and. A little extra effort to observe good practice is the key to ensure that the concrete properties are properly evaluated. For concrete definition a slump test is a method used to determine the consistency of concrete. Dec 18, 2019 to determine the workability or consistency of a concrete mix of given proportion by slump test. The concrete slump test is used for the measurement of a property of fresh concrete.
Apr 02, 2020 the slump test is the most commonly used method of measuring the consistency of concrete which can be employed either in a laboratory or at the. Because of it, it has been extensively applied for workability tests since 1922. Tests on concrete concrete slump test, compression test for. Concrete slump test for workability procedure and results. Slump test of fresh concrete with slump cone civil. The slump test the slump test is done to make sure a concrete mix is workable. This test method describes the procedure for determining the slump of. Procedure of slump flow test on self compacting concrete.
Pdf the minislump test is a fast, inexpensive and widely adopted method for evaluating the workability of fresh cementitious pastes. More specifically, it measures concrete consistency between batches. It is used, indirectly, as a means of checking that the correct amount of water has been added to the mix. But first here is here is the meaning of slump test a measure of consistency of freshly mixed concrete equal to the subsidence measured to the nearest 14 inches molded specimen immediately after removal of the slump cone.
The concrete slump test is known as standard test method for slump of hydrauliccement concrete and carries the code astm c 143 or aashto t 119. This test can be used to measures consistency between the individual batches. Slump test for concrete to determine its workability civil. Fill another onethird of the slump cone and tamp 25 times. Pdf selfcompacting concrete procedure for mix design. The test is an empirical test that measures the workability of fresh concrete. The ease with which one can use concrete is called workability. The slump test is sensitive to changes in the consistence of concrete, which correspond to slumps between 10 mm and 210 mm. Moisten the base plate and inside of slump cone, place base plate on level stable ground and the slump cone centrally on the base plate and hold down firmly. Slump cone 100 mm 4 in upper dia, 200 mm 8 in lower dia and 300 mm 12 in height tamping rod 600 mm 24 in high, 15. What is the procedure to perform concrete slump test in. Concrete having a different mix m15 or m20 etc with the suitable watercement ratio and can be prepared at the site or casting the 6 cubes after conducting the slump test. Standard test method for the slump of hydraulic cement concrete. Slump test shouldnt be carried if the aggregate used in concrete is above 40mm.
The water content was adjusted to compensate for the dry gravel and sand used in the lab. Test for workability of concrete slump cone youtube. The sampling and the test is performed under the following rules and laws. Chapter 17 tex415a, slump of portland cement concrete. If the slump test fails to meet the range limit as dictated by the british standard shown in the table below then the load should be. The slump flow of concrete is not only determined by the water content, but that is also influenced by other concrete ingredients. In a shear slump the top portion of the concrete shears off and slips sideways. The test is carried out in accordance with bs en 123502, testing fresh concrete. A small variation in slump caused by improper procedure or equipment, may cause the rejection of an entire. Slump test is an empirical test that measures workability of fresh ppt. It is used conveniently as a control test and gives an indication of the.
The slump test is treated as the most easy workability test toward concrete that offers low cost and instant results. This test method describes the procedure for determining the slump of freshlymixed plastic. When a truck mixer reaches the checkpoint, the quality engineer should check the delivery note to ensure that the concrete delivered is in compliance with the concrete grade required for the concrete element to be cast. Astm c143143m standard test method for slump of hydraulic cement concrete. It is a simple and lowcost test prepared at the laboratory or at the site during the work. Tests on concrete workability tests slump cone test, compaction factor test. Best practice guidelines for concrete placement planning, field testing, and sample collection page 1 september 2014 1 executive summary concrete is the most widely used construction material and can be used in almost any environment for a multitude of applications but successful concrete construction begins with careful planning. This test plays a vital role in ensuring immediate concrete quality in a construction project. The test is performed to check the consistency of freshly mixed concrete in a specific batch. Slump test for concrete concrete building materials. Fill cone full by volume and rod 25 times with 58inchdi ameter x 24inch long hemispherical tip steel tamping rod.
Sep 16, 2014 in the first pouring of concrete on a project a quality engineer and a consultant representative should be present to supervise or to check the concrete delivered on site. Astm c143 aci slump test of hydraulic cement concrete. Astm c143 standard test method for slump of hydraulic. The slump plate should be clean, firm, level and nonabsorbent.
Dec 26, 2016 the concrete slump test is an empirical test that measures the workability of fresh concrete. Legally binding document step out from the old to the newjawaharlal nehru invent a new india. The measured slump must be within a set range, or tolerance, from the target slump. These innovations enhanced the utility, flexibility. Specification for concrete slump test apparatus number of amendments.
If this test is being carried out in the field, the sample mixed concrete shall be obtained. Many improvements were made to wetmix equipment, primarily concrete pumps and materials, in the 1970s and 1980s. Astm c143 standard test method for slump of hydraulic cement. These improvements allowed pumping lowslump shotcrete mixtures longer distances at greater volumes. Slump test bs en 123502 specifies a method for determining the consistence of fresh concrete by the slump test. Concrete slump test procedure applications, types, uses. It is used conveniently as a control test and gives an indication of the uniformity of concrete from batch to batch. The test results for acceptance characteristics of selfcompacting concrete such as slump flow, jring and vfunnel are presented.
This test is used to determine if the concrete mixture delivered to the project meets the specified slump. The aashto standard test procedure reports the percentage of material finer than the no. This method of test specifies the procedure to be adopted. The stiffness of the concrete mix should be matched to the requirements for the finished product quality. Thoroughly mix the sample by shovelling to form a cone on the. This test is not suitable for very dry and high stiff concrete. About 6 liter of concrete is needed to perform the test, sampled normally. Commence the slump test as soon as possible after sampling of concrete as per standard procedure described in chapter 2.
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